Herman frederick eberts



(No Model.) I I H. F. EBERTS. PUSH BUTTON FOR DOOR. BELLS.

No. 425,870. Patented Apr. 15. 18-90.

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UNITED STATES I PATENT OFFICE.

HERMAN FREDERICK EBERTS, OF- DETROIT, MICHIGAN, ASSIGNOR TO JACQUES ROCI-IELEAU, OF IVINDSOR, ONTARIO, CANADA.

PUSH-BUTTON FOR DOOR-BELLS.

SPECIFICATION forming part of Letters Patent No. 425,870, dated April 15, 1890.

Application filed December 6, 1889. Serial No. 332,861. (No model.)

To a whom it may concern:

Be it known that I, HERMAN FREDERICK EBERTS, of Detroit, in the county of Wayne and State of Michigan, have invented new and useful Improvements in Push-Buttons for Operating Door-Bells; and I hereby declare that the following isa full, clear, and exact description thereof, reference being had to the accompanying drawings, which form a part of this specification.

The nature of my invention relates to an improvement in door-bells, and has for its object to so construct apush-button case similar to those used as circuit-closers for electric systems as to give the necessary motion to Wires for ringing ordinary jingle-bells or bells operated by a spring-actuated train of gears.

To this end my invention consists in the novel and peculiar construction of the several parts, as more fully hereinafter set forth and then definitely claimed.

As is well known, the ordinary electric pushbutton has a very limited longitudinal movement not exceeding one-quarter of an inch, which is entirely insufficient to actuate a distant bell through the old and well-tried system of wires and bell-cranks. At least one inch of initial movement of the wire is necessary to ring such bells or to set in motion a striking mechanism directly actuated by spring-driven clock-work.

Figure 1 is a vertical section of my pushbutton case. Fig. 2 is a side elevation of the bell-crank lever on the inner side of the doori'raine without the slotted plate in which it is pivoted. Fig. 3 is an elevation of the said lever and its slotted plate.

In the drawings which accompany this specification, A is the base-plate ofthe pushbutton case, having a pair of lugs a, in which is pivoted a pendent lever C,passing through a slot bin the spindle B. The outward movement of the spindle B in the case or shell A is arrested by the stop-pin c.

D is a rod pivoted at (Z to the pendent end of the lever C. The length of the arm C below the power is twice that of its short arm above it, and consequently it the longitudinal throw of the push-spindle be one-quarter inch the inward movement of the rod D will be double that.

The rod D passes through a small hole bored in the door-frame, where it is pivoted to a lever E by a transverse pin 6. The said lever E is pivoted at its foot toa slotted plate F by a pin f. In the eye 9 at the upper end of the lever E the bell-actuating Wire is connected. The distance between the points 6 and g may be double or treble the distance between the points e and f, and therefore the pull on the bell-wire will be in proportion say one or one and a half inch-Which will suffice to actuate the bell-wires of either of said systems. Y

That I claim as my invention, and desire to secure by Letters Patent, isv 1. The combination of the base A, the shell A, the slotted spindle or button B, passing through apertures in the shell and base, the lever C, pivoted to a support between the shell and base and passing through the spindle B, and a rod D, attached to the free end of the lever, substantially as described.

2. The combination of the base A, the shell A, the slotted spindle or button B, passing through apertures in the shell and base, the lever C, pivoted to a support between the shell and base and passing through the spindle B, a rod attached to the free end of the lever, and a slotted plate F, carrying a lever E, hung in the slot in said plate F and connected to the rod D, all substantially as shown and described.

HERMAN FREDERICK EBERTS.

IVitnesses:

JOSEPH P. GooDRioH, T. ERNEST. 

